Fruit Machine Chat

did a full electric check, battery works, power supply seems fine every light on the machine works, is there a switch on this bad boy that a dnt know about thats keeps tripping, just havnt a clue bout these machines at all...

ive just bought donkey kong maygay machine. it powers up and stays on for about 5 mins then flicks its self off, comes straoght back on but continues to do this, any ideas?? changed all fuses and gave it a good clean. the 1st 3 days i had the machine it was perfect no promblems at all, just didnt li...